Polycom SoundStation 2 EX Conference Phone W/ Extension Mics
Expansion Microphones - Increase the audio coverage of your conference room by pairing the Expansion Microphone with your SoundStation conference phone. | Poly, formerly Plantronics & Polycom
Polycom Extension Microphones 2 Kit for Soundstation2 EX | Sales-Tele
Expansion Microphones for Polycom SoundStation 2™ | Onedirect.co.uk